NETGEAR HA501 User Manual

7
Wireless Channel Selection
IEEE 802.11a utilizes 300 MHz of bandwidth in the 5 GHz Unlicensed National Information Infrastructure (U-NII)
band. Though the lower 200 MHz is physically contiguous, the FCC has divided the total 300 MHz into three distinct
domains, each with a different legal maximum power output.
U-NII Band Low Middle High
Frequency (GHz) 5.15 – 5.25 5.25 – 5.35 5.725 – 5.825
Max. Power Output 50 mW 250 mW 1W
Note: The high band is not supported in HA501 Wireless Adapter.
IEEE 802.11a uses Orthogonal Frequency Division Multiplexing (OFDM), a new encoding scheme that offers certain
benefits over a spread spectrum in channel availability and data rate. The 802.11a uses OFDM to define a total of 8
non-overlapping 200 MHz channels across the 2 lower bands; each of these is divided into 52 subcarriers and each
carrier is approximately 300 KHz wide. By comparison, 802.11b uses only 3 non-overlapping channels.
The HA501 user can use eight channels in non-turbo mode.
Turbo mode: OFF
Channel Frequency
36 5.18 GHz
40 5.20 GHz
44 5.22 GHz
48 5.24 GHz
52 5.26 GHz
56 5.28 GHz
60 5.30 GHz
64 5.32 GHz

NETGEAR HA501 Specifications

General

Radio Data Rate	6, 9, 12, 18, 24, 36, 48, 54, 72 for Turbo mode (Auto rate capable)
Frequency	5.15 ~ 5.25 GHz (lower band) for US/Canada, Japan 5.25 ~ 5.35 GHz (middle band) for US/Canada
Range: @ 6 Mbps @ 54 Mbps	Outdoor environment Indoor environment 1200 ft. 300 ft. 100 ft. 60 ft.
Encryption	40-bit (also called 64-bit), 128-bit or 152-bit WEP data encryption
Maximum computers per network	Limited by the amount of wireless network traffic generated by each node; typically 30 to 70 nodes.
Bus interface	PCMCIA type II PC Card
Provided drivers	Microsoft Windows 98, NT 4.0, 2000, Millennium, XP
Status LEDs	Power/Network
Electromagnetic Compliance	FCC Part 15 Class B and Class E
Environmental Specifications	Operating temperature: 0 to 60° C Operating humidity: 5-95%, noncondensing
Warranty	Limited 5-year warranty

Weight and Dimensions

Dimensions	W: 88 mm (3.4 in) D: 54 mm (2.1 in) H: 5 mm (0.2 in)
Weight	43.4 g (1.6 oz)